Brush with element of the channel strip type



H. CAVE Sept. 29, 1953 BRUSH WITH ELEMENT OF THE CHANNEL STRIP TYPE Filed March 10, 1948 Here? y M 4 z e L a 4 1 0/1 Patented Sept. 29, 1953 ITED STATES OFFICE BRUSH WIT-'HIELEMENTjOF THE CHANNEL -S-DRIP TYPE Henry ilave, *Haitforil, 001111., a'ssi'gno'r to The Fuller Brush "Company, Hartford, mm, a eorpol'aitibhof Uoiflelitieut Apiilicafion Maroh :10, 1948, Serifl N 0. 13,025

3 011131139 (Cl. 1-q9'=) The invention relates to a brush comprising a homer and a brush element or the ehannei stri type connected with the holder. "The veht'ron further relates to the chanheistri brush eremeht as a separate 'artioie.

-A brush element ofthe channel s'tri-p type iniu'des :a ion g'ituziinai metal strip shaped to term a rear wail and two forwarol 'converging'srde wafls constituting a hai'inel, "anti includes fibers 'pio- ;re'ctih'g in gener'aHy forward directions through the enamel heel; between the converging side walls. Ordinarily there is a "l'dh'gituiijin'allfiore wire at "least partly "Within the channel and the fibers are tamed around the core wire within the dhannei and having their end portions pro= trimin'e. l

'ac'oordanoe with prior pradtice, "brush elements of the 'ohahnei strip type have been secured to their hbrolers hyvar'ious devices "or means whieh "have fliredtly engaged the sitte walls of the channel. In some instances, "the brush elements have been held by "being pushed enfiwise into undercut grooves sha ed t receive them, and some instances one or both of the honverging side walis have been fdii'ed'tly 'enga'ge'ii hyrela'tiveiy movable stamping 'crei'iioes. .Inother "instanc s, th :nbers have eer removed or omitted at the extreme "ends or the enamel strip, aha the brush 'l'emmt has been held in place by direct engagement with the fronts 'ofthe channeiside walls atthe said ends.

The general Object of "the present invention is to :riroyide means for herding '-th'e brush 'erements of the ty e defin'e'd "withtiiit 'depehiing upon "Elirect eh'gajg ementififith the fofwafd converging s'icie W'a'lls "thereof. The said objetit of the vention is attained by LprDV'iiiing theiihanhel strip with either one or two integral laterally positioned flanges -which engage or are 'a'dafit'efi to engage either one "or two lbhgitu'dihal "facfe's on the holder. Anybneei a 'variety'of 'iheaifis play he provided -f0'r retaining the flange or flan es in piece and for thus securing the lbru'sh element to the holder.

A further object pfthe invention is to roroi iiie ahi'us'h element ofth'e type ae'fine'trhaiiingmeans whereby the said element has greatly ine'reaseii resistance to lateral bending 'oi' 'distdrtidn.

In the tira-win'gT-have shown in "detail several embodiments (if the invention, but it Willhe 'understood that various changes may -be made lrawi'ng "is not to be *cons't-rued as defining or limiting the scope of the invention, lai'm's forming a part 'of this specification being relied upon for that urpose.

0f the drawing:

Fig. -1 is a perspective view or a portion of a brush element embodying the invention.

Fig. '2 is a transverse sectional view or the *brush element shown in Fig. 1, the view also s'how'urg a portion or "a cylindrical hoider on which the brush element is mounted.

'Fig. 3 "is a'vie'w similar to Fig/210m showing ing a plurality of brush elements mounted on a sbhiewhat different holder.

Fig. i is a view similar to Fig. 3, 'but showing ing alternative brush elements eaoh having but one flan e.

'Fig. "5 'a View som'ew'ha't similar to Fig. 22, but showing an alternative brush element and an alternative h'olfier therefor.

Fig. 6 is a VieWsQmeWha-tsimiiar to Fig. "3, but showing another alternative brush element and an "alternative holder therefor.

'Re'fer'iing to the drawings, 'pairticiilarly Figs. 1 "and "2, H3 is a metal strip having longituiiinal eiiees, the said strip being transversely shap'e'ii a le ng itongitudin'all 'iin'es to form a rear W251i [2 and two Torward'convergingsidewalls I'll, "l' i cons'titi'iting a -haLnn1 with a narrow neck at the front. The said strip I5 is further transversely shapei eflerig iong'itueinal lines to form at least one laterally "p'ositionea lbn'gi'tuiiinzfl sup orting flange -16 integral with the corresponding fsiiie wail aria ex'teniiing latera'ily 'rroin thefronttportron thereof brainarfly "there are two similar supporting flanges "It, "t5 "as shown. These flanges ere relativeiy narrow "and each or them an exposed longitudinal 'eoige *paraiiel throughout its length to the seiii channel. shown, the "flanges -16, it extend transversely and are e renei "or approximately parallel with fiherear W'aIl l2.

A layer or fibers 2-'0 any sriitahle character is provjifledythe enii portions of the sai'i fibers hreijecting in generally Torwarii 'iiireeti'dns through the "channel neck between the eon'vergthe stat: walls. firdihajrily there is 'alongitufliirai eore=wiife ftwhich is 'at *le'ast partly \trit'hihthe ai'orezsaid ehannel or the strip. A round "wire is shOiWn which is "entirely within the "dhtttihl. Whene core wire-is prmiiiied, the fibers -'a1e*foli"leii arounti saiii wire within the channel. During manufacture -th'e "layer of fibers et, while straight, is a'epositei with the core wire 18 on from the constructions shown, and that the the hannei strip befo're "the sides thereof are closed to their flnal positions. The core wire is guided into the channel, thus folding the layer of fibers around it. The side walls of the channel strip are then rolled or pressed against the fibers to bind the several parts together by pressure. The layer of fibers is in engagement with and gripped by the sides of the narrow channel neck. The character of the metal of the channel strip is such that the sides of the strip are permanently set so as to maintain the pressure against the fibers.

The brush element comprising the channel strip with it flanges and the core wire and the fibers is supported upon or adapted to be sup ported upon a holder having a longitudinal recess in which the channel portion of the strip is positioned. The holder has at least one longitudinal face and ordinarily two such faces immediately adjacent the recess for engagement with the flange or flanges of the strip. The details or the holder may be widely varied, but as shown in Fig. 2, the holder is a rotatable sheet metal cylinder 22 having a longitudinal slot 23 therein constituting the recess. The portions of the outer surface of the cylinder adjacent the slot constitute the aforesaid longitudinal faces. The flanges l it can be retained in engagement with the said longitudinal faces by any suitable means, and as shown, there are screws 2 2% extending through holes in the flanges and into threaded holes in the cylinder.

It will be seen that with a brush embodying the invention, the brush element is secured in place by means of the flanges thereof. are not held by engagement with the side walls l4, it as has been the prior practice. The flange or flanges on the channel strip provide greatly increased resistance to lateral bending of the brush elem nt, this being importantin many instances. The fibers are firmly gripped at the narrow neck between the side walls of the channel member, but in use, there is frequently a tendency by reason of local conditions for portions of the side walls to yield laterally with the result that the corresponding fibers are not properly held. With the present construction, particularly when two flanges are provided, the side walls of the channel are reinforced by the flanges. This greatly reduces the possibility of any localized yielding of the channel side walls.

Fig. 3 shows a brush generally similar to that shown in Figs. 1 and 2 but differing in various details. There is a metal strip 26 generally similar to the strip it and having a rear wall 28, side walls 39, 3G and either one or two flanges 32, 32. There is a core wire 34 with relatively wide outer and inner portions and a narrower connecting portion. The core wire 34 is positioned only partly within the channel, the narrower connecting portion thereof being at the channel neck between the converging side walls. Fibers 36 are folded around the core wire as already described, the shape of the core wire giving the fibers a greater angular spread.

A holder 38 provided having one or more longitudinal recesses it, so shaped to receive the channel portion of the strip and to engage the rear and side walls thereof. The holder 38 has at least one longitudinal face and preferably two such faces adjacent each recess for engagement with the flange or flanges of the corresponding strip. The flanges 32, 32 can be retained in engagement with the said longitudinal faces by any suitable means, and as shown, there are screws 42, 42 entering threaded holes in the d holder and so located that their heads overlie and engage the edge portions of the flanges.

Fig. 4 shows a brush very similar to that shown in Fig. 3 and differing therefrom chiefly in the provision of only a single flange 32 on each channel strip. The holder 44 is similar to the holder 38 but the spacing between the recesses may be less. For holding the single flange 32 in engagement with the longitudinal front face on the holder there are provided screws 46, 46 extending through holes in the flange and into threaded holes in the holder.

Fig. 5 shows a strip 48 which differs substantially from the strips l0 and 26. The strip 48 is shaped along longitudinal lines as already described to form a rear wall 50 and side walls 52, 52. The strip is further shaped along longitudinal lines to form two diverging integral longitudinal walls 54, 54 extending generally forward from the fronts of the converging side walls 52, 52. The strip 48 is still further shaped along longitudinal lines to form two opposite relatively narrow longitudinal supporting flanges 56, 56 extending transversely from the fronts of the diverging walls 54, 54 and having exposed longitudinal edges. A core wire 58 and fibers 60 are provided which may be similar to those already described in connection with Figs. 1 and 2.

A holder 62 is provided which is a rotatable cylinder generally similar to the cylinder 22 shown in Fig. 2, but provided with a substantially wider recess. The flanges 5t, 56 can be retained in engagement with the longitudinal faces on the cylinder by any suitable means, and as shown the cylinder has longitudinal retaining strips 64, 64 welded or otherwise secured thereto, these strips being shaped to overlie the edge portions of the flanges 56, 56. The brush element can be put in place on the cylinder or removed therefrom by longitudinal movement.

A brush as shown in Fig. 5 has the advantage that the ends of the fibers are nearer the periphery of the cylinder, but are nevertheless at a proper distance from the channel portion of the strip for the required flexibility.

Fig. 6 shows a brush somewhat similar to that shown in Figs. 1 and 2 but differing as to the positions of the flanges and as to the character of the holder. There is a metal strip 66 having a rear wall 68, side walls ill, 19 and flanges l2, 12. The flanges 12, i2, instead of extending transversely parallelly with the rear wall 68, extend in generally rearward directions. The flanges preferably diverge toward the rear. A core wire I l and fibers 16 are provided which may be similar to those already described in connection with Figs. 1 and 2.

A holder is provided having a base 15 and longitudinal bars 8t, 89 secured to the base, a longitudinal recess being formed between each two adjacent bars. The bars 80, have inclined walls adjacent the base for engagement with the outer faces of the flanges l2, 12. The bars 80, 80 may also have oppositely inclined walls 82, 82 adjacent their fronts.

It will be seen that the brush element is held in place on the base by reason of the engagement of the inclined outer faces of the flanges i2, 72 with the similarly inclined faces on the bars 88, 89. The brush element can be put in place on the holder or removed therefrom by longitudinal movement or alternatively by disconnecting the bars 80, 80 from the base 18.

What I claim is:

1. The combination in a brush, of a metal strip which has longitudinal edges and is transversely shaped along longitudinal lines to form a rear wall and two forward converging side walls constituting an open-front longitudinal channel with a narrow neck at the front and which is further transversely shaped along longitudinal lines to form an integral longitudinal supporting flange extending laterally from the front portion of one of the said converging side walls and substantially parallel to the said rear wall, the said flange being relatively narrow and having a laterally exposed longitudinal edge parallel throughout its length to the said channel, a longitudinal core wire at least partly within the channel of the strip, a layer of fibers folded around the core wire within the channel and having the end por tions of the fibers projecting in generally forward directions through the said neck between the converging side walls, the said folded layer of fibers being in engagement with and gripped by the sides of the said channel neck, a holder having a longitudinal recess in which the channel portion of the strip is positioned and having immediately adjacent the recess a longitudinal face which is substantially parallel to the said rear wall of the channel and which directly engages the said supporting flange, and means for retaining the said flange in engagement with the said face so as to hold the strip in place.

2. The combination in a brush, of a metal strip which has longitudinal edges and is transversely shaped along longitudinal lines to form a rear wall and two forward converging side walls constituting an open-front longitudinal channelwith a narrow neck at the front and which is further transversely shaped along longitudinal lines to form two opposite integral longitudinal supporting flanges extending laterally from the front portions of the respective converging side walls and substantially parallel to the said rear wall, the said flanges being relatively narrow and having laterally exposed longitudinal edges parallel throughout their lengths to the said channel, and the said flanges being engageable with a suitable longitudinal holder for supporting the strip on the holder, a longitudinal core wire at least partly within the channel of the strip, and a layer of fibers folded around the core wire within the channel and having the end portions of the fibers projecting in generally forward directions through the said neck between the converging side walls, the said folded layer of fibers being in engagement with and gripped by the sides of the said channel neck.

3. The combination in a brush, of a metal strip which has longitudinal edges and is transversely shaped along longitudinal lines to form a rear wall and two forward converging side walls constituting an open-front longitudinal channel with a narrow neck at the front and which is further transversely shaped along longitudinal lines at the front to form two opposite integral relatively narrow longitudinal supporting flanges having exposed longitudinal edges, the said flanges extending from th fronts of the side walls and being substantially parallel with the rear wall, a longitudinal core wire at least partly within the channel of the strip, a layer of fibers folded around the core wire within the channel and having the end portions of the fibers projecting in generally forward directions through the said channel neck between the converging side walls, the said folded layer of fibers being in engagement with and gripped by the sides of the said channel neck, a holder having a longitudinal recess with a width at the front at least equal to the width of the channel ortion of the strip which recess is shaped to receive the said channel portion of the strip and to engage the rear and side walls thereof, the said holder having two longitudinal front faces adjacent the recess with which the flanges of the strip are engaged, and means for retaining the said flanges in engagement with the said faces so as to hold the strip in place.

HENRY CAVE.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 711,544 Tesch Oct. 21, 1902 719,156 Spence Jan. 27, 1903 968,820 Vardell Aug. 30, 1910 1,749,744 Thacher Mar. 4, 1930 2,021,768 Epp Nov. 19, 1935 2,146,624 Cave Feb. 7, 1939 2,261,781 \Smellie Nov. 4, 1941 2,271,556 Boyle Feb. 3, 1942 FOREIGN PATENTS Number Country Date 411,753 Great Britain June 14, 1934 

